古田山中亚热带常绿阔叶林群落物种多样性的空间变异特征

doi:10.17520/biods.2018138

生物多样性 ›› 2018, Vol. 26 ›› Issue (9): 1023-1028. DOI: 10.17520/biods.2018138 cstr: 32101.14.biods.2018138

所属专题：数据论文

古田山中亚热带常绿阔叶林群落物种多样性的空间变异特征

芦伟^1,^2#, 余建平^3#, 任海保^2,^*(), 米湘成², 陈建华^1,^*(), 马克平²

1 (浙江师范大学化学与生命科学学院, 浙江金华 321004)
2 (中国科学院植物研究所植被与环境变化国家重点实验室, 北京 100093)
3 (钱江源国家公园生态资源保护中心, 浙江开化 324300);

收稿日期:2018-05-10 接受日期:2018-08-28 出版日期:2018-09-20 发布日期:2019-01-05
通讯作者: 任海保,陈建华
作者简介:# 共同第一作者
基金资助:
国家自然科学基金(31570546)

Spatial variations in species diversity of mid-subtropical evergreen broad-leaved forest community in Gutianshan National Nature Reserve

Wei Lu^1,^2#, Jianping Yu^3#, Haibao Ren^2,^*(), Xiangcheng Mi², Jianhua Chen^1,^*(), Keping Ma²

1 College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang 321004
2 State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093
3 Ecological Resource Protection Center, Qianjiangyuan National Park, Kaihua, Zhejiang 324300

Received:2018-05-10 Accepted:2018-08-28 Online:2018-09-20 Published:2019-01-05
Contact: Ren Haibao,Chen Jianhua
About author:# Co-first authors

摘要/Abstract

摘要：

古田山常绿阔叶林的群落组成、结构及其维持机制已有许多研究, 但该地区亚热带常绿阔叶林生物多样性空间变异特征还缺乏认识。本文以古田山24 ha大样地(划分为24个1 ha小样地)为基础, 具体分析了α多样性和β多样性在1 ha尺度上的空间变异特征。结果表明: (1)群落第一、二优势物种在各小样地之间变化不大, 但第三优势种变化较大; (2) α多样性变化中, 样地间木本植物个体数量变异最大, 物种丰富度其次, Pielou均匀度指数变异性最小; (3)物种丰富度与植株个体数量、Pielou均匀度指数没有显著的相关性, 与Shannon-Wiener指数呈显著正相关; Shannon-Wiener指数与Pielou均匀度指数呈显著正相关; (4)相邻样地间物种替代速率空间变异较大, 与物种丰富度的空间变化格局有明显差异。这些结果说明尺度对认识群落结构、探讨群落维持机制有重要作用; 由于森林群落是多尺度生态过程作用的结果, 大尺度样地可能有利于更好地揭示森林群落维持机制。

关键词: 古田山, 中亚热带常绿阔叶林, α多样性;, β多样性;, 空间变异

Abstract

Many studies have examined the patterns and mechanisms underlying the structure of mid-subtropical forest community, but spatial variation in species diversity has rarely been investigated. We examined spatial variations in α- and β-diversity among and between 24 subplots of 1-ha each within the 24 ha forest dynamics plot in Gutianshan National Nature Reserve. We found that (1) the top two dominant species were the same for almost all the subplots, but the third dominants differed greatly; (2) α-diversity varied greatly among subplots: total number of individuals showed the largest differences, followed by species richness, Shannon-Wiener index, and Pielou evenness index; (3) species richness showed no correlation with total abundance and Pielou evenness index but was positively correlated with Shannon-Wiener index, which was positively correlated with Pielou evenness; (4) there was high species turnover between neighboring subplots, but these patterns were not consistent with the spatial variation in species richness. Our results highlight the importance of spatial scales for assessing community structure and mechanisms of community assembly. Since forest communities are influenced by ecological processes at multiple scales, large-scale plots may be better than small-scale plots to explore multiple mechanisms of community assembly.

Key words: Gutianshan, mid-subtropical evergreen broad-leaved forest, alpha diversity, beta diversity, spatial variation

芦伟, 余建平, 任海保, 米湘成, 陈建华, 马克平 (2018) 古田山中亚热带常绿阔叶林群落物种多样性的空间变异特征. 生物多样性, 26, 1023-1028. DOI: 10.17520/biods.2018138.

Wei Lu, Jianping Yu, Haibao Ren, Xiangcheng Mi, Jianhua Chen, Keping Ma (2018) Spatial variations in species diversity of mid-subtropical evergreen broad-leaved forest community in Gutianshan National Nature Reserve. Biodiversity Science, 26, 1023-1028. DOI: 10.17520/biods.2018138.

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链接本文: https://www.biodiversity-science.net/CN/10.17520/biods.2018138

https://www.biodiversity-science.net/CN/Y2018/V26/I9/1023

图/表 2

图1 古田山24 ha森林大样地内1 ha小样地间α多样性的变异特征。(a) 1 ha小样地内总的木本植物个体数量; (b)物种丰富度; (c) Shannon-Wiener指数; (d) Pielou均匀度指数。背景曲线为等高线, 数字为相对于24 ha样地最低点的高差。横坐标、纵坐标分别指24 ha大样地的长度和宽度(单位: m)

Fig. 1 Spatial variation of α diversity among 24 subplots of 1-ha each within the 24 ha forest dynamics plot in Gutianshan. (a) Total number of individuals within 1-ha subplot; (b) Species richness; (c) Shannon-Wiener index; (d) Pielou evenness index. The background curves are contours and the numbers are elevations relative to the lowest point in the whole plot of 24 ha. X- and Y-axes are length and width of 24 ha plot (unit: m).

图2 古田山24 ha森林大样地内1 ha小样地内β多样性(a)及样地间β多样性(b)的空间变异特征。背景曲线为等高线, 数字为相对于24 ha样地最低点的高差。图b灰白斑块背景为物种丰富度的空间变异(见图1b)。

Fig. 2 Variation of β-diversity within a 1-ha plot (a) and between-nearest-neighbor-plots (b). The background curves are contours and the numbers are elevations relative to the lowest point in the whole 24 ha plot. The gray patchy ground refers to the variation in species richness among plots, the same as Fig. 1b.

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古田山中亚热带常绿阔叶林群落物种多样性的空间变异特征

Spatial variations in species diversity of mid-subtropical evergreen broad-leaved forest community in Gutianshan National Nature Reserve

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